radiolaria - rads_cenozoic - Siphocampe modeloensis

radiolaria - rads_cenozoic - Siphocampe modeloensis radiolaria - rads_cenozoic - Siphocampe modeloensis

Siphocampe modeloensis

Classification: rads_cenozoic -> Artostrobiidae -> Siphocampe -> Siphocampe modeloensis
Sister taxa: S. acephala, S. altamontensis, S. arachnea, S. bassilis, S. daseia, S. elizabethae, S. grantmackiei, S. imbricata, S. lineata, S. minuta, S. modeloensis, S. nodosaria, S. pachyderma, S. quadrata, S. septata, S. stathmeporoides, S. sp.

Taxonomy

Citation: Siphocampe modeloensis (Campbell&Clark) Caulet 1986

taxonomic rank: species

Basionym: Lithocampe modeloensis

Synonyms:

From Suzuki Paleotax db:

1944 Lithocampe (Lithocampium) modeloensis longa n. var. Campbell & Clark p. 59, pl. 7, fig. 31
1944 Lithocampe (Lithocampium) modeloensis n. sp. Campbell & Clark p. 59, pl. 7, figs. 28-30
1975 Lithomitra modeloensis (Campbell et Clark) group Petrushevskaya p. 586, pl. 10, fig. 9
1978 Lithomitra modeloensis (Campbell et Clark) group Dzinoridze et al. pl. 40, fig. 7
2017 Lithocampe (Lithocampium) modeloensis longa Campbell & Clark? Chen et al. p. 232, pl. 83, figs. 21-23

Taxonomic discussion: (Campbell and Clark) 1944; Caulet 1986

Catalog entries: Lithocampe modeloensis

Type images:

type material: L. modeloensis

Original description: Shell fairly robust (approximately twice its maximum diameter in length); cephalis subhemispherical (70°) with blunted, subangled apex, rounded sides and with a length about same as basal diameter, surface irregular; shell-joints unequal, three, uppermost one (30°) shortest (0.22 total length in length), with bulged sides, and with base wider than upper diameter, middle joint longest (0.5 total length), with subequal upper and lower diameters, bulged sides, and whole shaped much liken mildly tapering (40°) barrel, third joint shorter than first one, subcylindrical, with inturned, horizontal free edge (diameter 0.24 total length) without teeth; wall rather thin and even thinner in subcylindrical section; pores of cephalis and upper joint alike, tiny, subcircular, well spaced, scattered, about 44, pores of shell-joints in five subequidistant (save last which is closer to fourth than others) transverse rows of 16-20 pores in a row, circular (save in last row just above aperture where they are rectangles), subequal (save in last row where there are smaller ones), larger than in upper part of shell; surface with about 16 or more sinuous, simple or bifurcated, subvertical ribs.
Remarks on original description: [Campbell and Clark here list the species under the subgeneric name Lithocampium and include the subgeneric name in the species name.
New name Lithomitra modeloensis (Campbell and Clark) Petrushevskaya 1975c]

Description

Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): within Neogene Period (2.59-23.03Ma, top in Piacenzian stage). Data source: Lazarus et al. 2015 - "N age group"
First occurrence (base): within Neogene Period (2.59-23.03Ma, base in Aquitanian stage). Data source: Lazarus et al. 2015 - "N age group"

Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Siphocampe modeloensis, synonyms included - Lithomitra modeloensis; Siphocampe modeloensis;
See also space-time plot :: Samples map :: Parent: Siphocampe

References:
Campbell, A. S. & Clark, B. L. (1944). Miocene radiolarian faunas from southern California. Geological Society of America, Special Papers. 51: 1-76. gs
Caulet, J. (1986b). Radiolarians from the Southwest Pacific. Initial Reports of the Deep Sea Drilling Project. 90: 835-861. gs

Siphocampe modeloensis compiled by the radiolaria@mikrotax project team viewed: 14-12-2024

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Short stable page link: https://mikrotax.org/radiolaria/index.php?id=205389 Go to Archive.is to create a permanent copy of this page - citation notes

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